Aosite, kusukela 1993
Impendulo: Abantu bavame ukusebenzisa omazibuthe ukuze bathole ikhwalithi yensimbi engagqwali. Uma uzibuthe ungakhangi, ungowangempela futhi ngentengo efanelekile. Ngokuphambene nalokho, kubhekwa njengenkohliso. Eqinisweni, lena indlela yohlangothi olulodwa kakhulu futhi engelona iqiniso yokuhlonza amaphutha.
Insimbi engagqwali ye-Austenitic ayinamagnetic noma ayinamandla kazibuthe; insimbi engagqwali ye-martensitic noma i-ferritic inozibuthe. Kodwa-ke, ngemuva kokuthi insimbi engagqwali ye-austenitic icutshungulwe ngokubandayo, ukwakheka kwengxenye ecutshunguliwe nakho kuzoshintsha ku-martensite. Uma kukhulu ukuwohloka kokucubungula, ukuguqulwa kwe-martensite kuyanda kanye nezakhiwo ezinkulu kazibuthe. Izinto zomkhiqizo ngeke zishintshe. Kufanele kusetshenziswe indlela yobungcweti ukuze kutholwe izinto zensimbi engagqwali. (Ukutholwa kwe-Spectrum, insimbi engagqwali ebandlulula ukutholwa koketshezi).